thanks Ocho. I have heard similar stories but from what I have heard it is people who

1) lay/bet betlow the level where commission would be paid.
2) delete the original bet.
3) Flood the market with bets and updates to the bets every few seconds.

I also hear they give you a warning which I am yet to recieve and I have been doing this for a while now.

I think they are more concerned with people trying to avoid the commission or overwhelming their infrastructure with too many small bets.

Also I think if you leave the inital bet at $1.01 or $1000 you are technically not betting less then the $5 minimum. You just didn't get it all matched.

If I get a warning I will up my bets to the minimum limit.